Impact based wideband nonlinear resonating metamaterial chain

Banerjee, A, Calius, E and Das, R 2018, 'Impact based wideband nonlinear resonating metamaterial chain', International Journal of Non-Linear Mechanics, vol. 103, pp. 138-144.

Document type: Journal Article
Collection: Journal Articles

Title Impact based wideband nonlinear resonating metamaterial chain
Author(s) Banerjee, A
Calius, E
Das, R
Year 2018
Journal name International Journal of Non-Linear Mechanics
Volume number 103
Start page 138
End page 144
Total pages 7
Publisher Elsevier
Abstract Due to the out of phase vibration of the internal units, unusual frequency dependent extreme properties, such as negative effective mass, can be perceived in a metamaterial. However, the performance of the linear metamaterial is limited to a narrow bandwidth due to the dependency on linear resonance. In this paper, this main limitation of the metamaterial is addressed by introducing the piecewise linear impacting oscillator at the mass-in-mass resonating unit. The impacting system dissipates energy and consequently attenuates the vibration of the main structure due to the counteraction of the external excitation by the resulting impulse force. Attenuation bandwidths can be increased in higher and lower frequency side for impact metamaterial as it can attenuate the two transmission peaks. In the lower frequency side attenuation bandwidth can be increased 50% and in the higher frequency side it theoretically becomes infinite. Therefore, impacting metamaterial can be considered as a potential solution towards low frequency and wideband vibration isolator. This paper also thoroughly discussed different nonlinear responses in each units of metamaterial chain.
Subject Civil Engineering not elsewhere classified
Mechanical Engineering not elsewhere classified
Applied Mathematics not elsewhere classified
Keyword(s) Chaos and multi-periodic response
Impact analysis
Impact dampers
Impact metamaterial
Steady state response
Wideband metamaterial
DOI - identifier 10.1016/j.ijnonlinmec.2018.04.011
Copyright notice © 2018 Elsevier Ltd. All rights reserved.
ISSN 0020-7462
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